[iOS]AVPlayerItemVideoOutput.hasNewPixelBufferForItemTime doesn't work correctly

Question

It\'s my first question here, so don\'t be severe.

I\'m playing video from the net using AVPlayer. I output the current frame using AVPlayerItemVideoOutput

Answer 1

I noticed that AVPlayerItemVideoOutput "jams" somehow when using HLS multibitrate playlists. When player changes to higher bitrate -> trackid of playeritems video track changes -> it will got few pixelbuffers but after that hasNewPixelBufferForItemTime will return NO always.

I have spent days with this problem. Accidentally I noticed that if I go to background and after that back to foreground -> Video will play normally with higher bitrate. This is not the solution.

Finally I found workaround to this problem. I set counter for failed pixelbuffers, after 100 fails I remove current output from playeritem and set same instance back.

if (failedCount > 100)
    {
        failedCount = 0;
        [_playerItem removeOutput:_output];
        [_playerItem addOutput:_output];
    }